20611476469 has 4 divisors (see below), whose sum is σ = 21696291040. Its totient is φ = 19526661900.

The previous prime is 20611476463. The next prime is 20611476503. The reversal of 20611476469 is 96467411602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20611476469 - 2³ = 20611476461 is a prime.

It is a super-2 number, since 2×20611476469² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20611476461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 542407257 + ... + 542407294.

It is an arithmetic number, because the mean of its divisors is an integer number (5424072760).

Almost surely, 2^20611476469 is an apocalyptic number.

It is an amenable number.

20611476469 is a deficient number, since it is larger than the sum of its proper divisors (1084814571).

20611476469 is a wasteful number, since it uses less digits than its factorization.

20611476469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084814570.

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 20611476469 in words is "twenty billion, six hundred eleven million, four hundred seventy-six thousand, four hundred sixty-nine".